Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Engineers · Reaction Engineering Kit

Reaction Engineering Kit for a diffusion

Built for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed. Simulate a diffusion live below — adjust the inputs and watch it respond, right in your browser.

Reaction Kinetics

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Reaction KineticsLive

rate laws · Arrhenius temperature

Controls

Presets

Watch reactant concentration fall over time. The reaction order sets the curve shape; raising temperature speeds the rate constant, Arrhenius-style.

Rate constant k

Temperature factor

▶ Run in Python

Data Inspector

Order1

Effective k0.300

Arrheniusk = A·e^(−Ea/RT)

Governing equation

rate = k_{eff} [A]^{1} = 0.30 [A]^{1}

Reading this result: First-order: [A] decays exponentially with a constant half-life; raising temperature lifts k_eff to 0.30, steepening the curve Arrhenius-style.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Equilibrium

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Chemical Equilibrium (Le Chatelier)Live

A ⇌ B shifting with stress

A (reactant)0.67 M

⇌

B (product)1.33 M

Controls

A reversible reaction A ⇌ B settles where forward and reverse rates balance. Add reactant or raise temperature and watch the equilibrium shift to relieve the stress.

Presets

Equilibrium constant K

Amount added

Temperature factor

▶ Run in Python

Data Inspector

K (effective)2.00

[A]0.67

[B]1.33

Favoredproducts

Governing equation

K_{e q} = \frac{[ B ]}{[ A ]} = \frac{1.33}{0.67} \approx 2.00

Reading this result: Effective K is near 1, so A and B coexist in comparable amounts and a small stress can tip the balance either way.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Titration

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Acid–Base TitrationLive

pH curve · equivalence point

Controls

Add base to an acid and track the pH. The steep jump marks the equivalence point, where moles of acid equal moles of base.

Presets

Acid concentration (M)

Base concentration (M)

Acid volume (mL)

▶ Run in Python

Data Inspector

Equivalence50.0 mL

Typestrong acid + strong base

pH at eq.7.0

Governing equation

C_{a} V_{a} = C_{b} V_{b} \Rightarrow V_{e q} = \frac{0.1 \times 50}{0.1} = 50.0 mL

Reading this result: Equivalence sits near 50.0 mL; because this is a strong acid with a strong base, the pH there is exactly 7 and the jump is nearly vertical.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

Is this good for engineers?: Yes — this version of "Reaction Engineering Kit for a diffusion" is framed for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.